import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/dengru")//访问路径,浏览器输入的路径
public class HelloServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException{
        resp.setContentType("text/html;charset=UTF-8");
        String username=req.getParameter("username");
        String password=req.getParameter("password");
        if(username==null||username.isEmpty()||username.length()==0){
            resp.sendRedirect("/untitled4_war/sb.html");
        }else{
            resp.sendRedirect("/untitled4_war/cg.html");
        }
    }
}